Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution. (I) Lower groups of organisms have simpler body design (II) Asexual reproduction is common is lower groups (III) Asexual reproduction is common in higher groups of organisms. (IV) The high incidence of sexual reproduction in angiosperms and vertebrates Choose the correct answer from the options given below

Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?

Which plants have flowers as their reproductive organs?

Why do living organisms have narrow pH range ?

Why are variation possible in progeny of sexually reproductive individuals ?

Which is a better mode of reproduction: sexual or asexual? Why?

Why is reproduction essential for organisms?

Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?